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From "Ryan McKinley (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3161) Use of 'qt' should be restricted to searching and should not start with a '/'
Date Fri, 24 Feb 2012 22:27:48 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13216000#comment-13216000
] 

Ryan McKinley commented on SOLR-3161:
-------------------------------------

bq.  And I guess Yonik's right about keeping the old name, even though it's a bad one.

I don't think its fair to call it a "bad" one -- it is just no longer the most appropriate
name.  "qt" came from before RequestHandlers existed.  Old names is the tradeoff we have with
strong back-compatibility
                
> Use of 'qt' should be restricted to searching and should not start with a '/'
> -----------------------------------------------------------------------------
>
>                 Key: SOLR-3161
>                 URL: https://issues.apache.org/jira/browse/SOLR-3161
>             Project: Solr
>          Issue Type: Improvement
>          Components: search, web gui
>            Reporter: David Smiley
>            Assignee: David Smiley
>             Fix For: 3.6, 4.0
>
>
> I haven't yet looked at the code involved for suggestions here; I'm speaking based on
how I think things should work and not work, based on intuitiveness and security. In general
I feel it is best practice to use '/' leading request handler names and not use "qt", but
I don't hate it enough when used in limited (search-only) circumstances to propose its demise.
But if someone proposes its deprecation that then I am +1 for that.
> Here is my proposal:
> Solr should error if the parameter "qt" is supplied with a leading '/'. (trunk only)
> Solr should only honor "qt" if the target request handler extends solr.SearchHandler.
> The new admin UI should only use 'qt' when it has to. For the query screen, it could
present a little pop-up menu of handlers to choose from, including "/select?qt=mycustom" for
handlers that aren't named with a leading '/'. This choice should be positioned at the top.
> And before I forget, me or someone should investigate if there are any similar security
problems with the shards.qt parameter. Perhaps shards.qt can abide by the same rules outlined
above.
> Does anyone foresee any problems with this proposal?
> On a related subject, I think the notion of a default request handler is bad - the default="true"
thing. Honestly I'm not sure what it does, since I noticed Solr trunk redirects '/solr/' to
the new admin UI at '/solr/#/'. Assuming it doesn't do anything useful anymore, I think it
would be clearer to use <requestHandler name="/select" class="solr.SearchHandler"> instead
of what's there now. The delta is to put the leading '/' on this request handler name, and
remove the "default" attribute.

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